| View previous topic :: View next topic |
| Author |
Message |
Teddy
Guest
|
 Posted: Sat Feb 14, 2009 9:48 am Post subject: Aiwa Tv , horizontal Line on center |
 |
|
| I have Aiwa tv Model Tv-C202SKE it's having horizontal line on center nothing else & i changed the vertical IC LA7830 & 2 caps around it ( 50V-100uf & 50V- 1uf ) but still there's no change only Horizontal line. there's 25v input to the Ver.Ic but no output even when i changed the IC the same thing, so hlep me plz what could be the possible problem. |
|
| Back to top |
|
 |
jts1957
Joined: 24 Nov 2008
Posts: 2476
Location: Far, Far Away
|
|
| Back to top |
|
|
Guest
|
| Posted: Sat Feb 14, 2009 6:29 pm Post subject: |
|
|
| am getting 25v on pin 6 (Vcc ) but am also getting 25v on pin 2 (output) |
|
| Back to top |
|
|
Guest
|
| Posted: Thu Feb 26, 2009 8:38 pm Post subject: |
|
|
| am getting 25v on pin 6 (Vcc ) but am also getting 25v on pin 2 (output) , & how can this happend, I mean 25v on the input & output ? so regarding with all the symptoms i have told u , tell me what couold be the possible faults, waiting for ur reply, thanks !! |
|
| Back to top |
|
|
jts1957
Joined: 24 Nov 2008
Posts: 2476
Location: Far, Far Away
|
| Posted: Fri Feb 27, 2009 4:34 am Post subject: |
|
|
| Does the IC have correct "signal"/"waveform" at its input (Pin #4)? |
|
| Back to top |
|
|
Westly_gulay
Joined: 04 Mar 2009
Posts: 3
Location: Philippines
|
| Posted: Wed Mar 04, 2009 2:14 am Post subject: |
|
|
I have some expiriance in other model you may have check the 100pf ceramics in vertical section
_________________
Im from bulacan philippines im tv technician at 8years |
|
| Back to top |
|
|
Guest
|
| Posted: Thu Mar 19, 2009 5:34 pm Post subject: |
|
|
| the tv is still like that no change soplz can u gime any ideas with that, there's a faint white with blue thin horizontal line on the middle screen nothing else, |
|
| Back to top |
|
|
jts1957
Joined: 24 Nov 2008
Posts: 2476
Location: Far, Far Away
|
| Posted: Thu Mar 19, 2009 10:42 pm Post subject: |
|
|
If you have access to "Sams Photofacts," their cross reference lists the following as using "LA7830":
4272 / 4241 / 4642 / 4275 / 4337 / 4353 / 4364 / 4374 / 4137
The above schematics may be of help, even though they aren't "Aiwa." |
|
| Back to top |
|
|
Guest
|
| Posted: Fri Mar 20, 2009 2:47 am Post subject: WRATH |
|
|
| Flyback feeds the primary voltage. |
|
| Back to top |
|
|
|
|
|
FAQ
